Adds a third rapid-toggle assertion alongside the existing folder-reconcile check: chooseTransport(.airDrop) immediately followed by chooseTransport(.oneDrive), with NO sleep, then an immediate send(anchor: nil) — proving send() correctly awaits the pending reconcile Task (SendController.swift/AppModel.swift in this series) rather than racing ahead with a stale recordUncommented flag. Asserts the freshly-sent, still-unmarked PDF is never itself reported as an already-returned document. Also updates composePDFForSend's call site for its new transport: parameter. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012ZiTXPbPCSjzPVsfoweAbp